12641552789 has 8 divisors (see below), whose sum is σ = 12774302112. Its totient is φ = 12508952400.

The previous prime is 12641552783. The next prime is 12641552821. The reversal of 12641552789 is 98725514621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12641552789 - 2⁸ = 12641552533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641552783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137702 + ... + 210344.

It is an arithmetic number, because the mean of its divisors is an integer number (1596787764).

Almost surely, 2^12641552789 is an apocalyptic number.

It is an amenable number.

12641552789 is a deficient number, since it is larger than the sum of its proper divisors (132749323).

12641552789 is a wasteful number, since it uses less digits than its factorization.

12641552789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74467.

The product of its digits is 1209600, while the sum is 50.

The spelling of 12641552789 in words is "twelve billion, six hundred forty-one million, five hundred fifty-two thousand, seven hundred eighty-nine".